Automatic registering device for impulse series



land is held over contacts 3! and 5I.

Patented May 15, 1951 AUTOMATIC'REGISTERING DEVICE FOR IMPULSE SERIES Anton Christian Jacobaeus, Stockholm, Sweden, assigner to Teiefonaktiebolaget L M Ericsson, Stockholm, Sweden, a company of Sweden Application November 19, 1945, Serial No. 629,605 In Sweden January 9, 1945 4 Claims. l

By transmission of figures in a telephone number from a telephone exchange to another or from a telephone instrument to an automatic telephone exchange, impulse series are usually used, in which the number of impulses indicates the value oi the ligure. Sometimes, however, impulses of different kinds are sent in different combinations, shorter impulse-series thus being obtained and the transmission being carried through more quickly. Such combinations of impulses are received by special impulse-receiving devices and registered in automatic registers, which afterwards set the selectors.

The present invention refers to a simple and reliable method of receiving and registering signals among which are electric impulses of more than one kind. For that purpose, a cross-bar switch is'used, in a way known per se, as a registering member and the invention consists of the selecting magnets of said crossbar switch being actuated from different impulse-receiving devices by closing circuits passing contact devices on the cross-bar switch itself, said contact devices being different for each impulse-receive ing device.

The invention will be more closely described with reference to the accompanying drawings: In Fig. 1 there is shown a registering device, in which Rl, R2-R8 arefrelays, BM, BMI-Elvin operating magnets in a cross-bar switch, STMI, STMZ-SI'Mll) selecting magnets in the same cross-bar switch and lit-Ki contact rows on the operating bar, which is actuated by the ma gnet BMU. In the example of practice of the invention shown in Figure 1, two kinds of electric impulses such, for instance, as alternating current of diiierent frequencies are conducted by wires a and b. One kind of impulses operates a first impulse receiving relay Rl over wire b and the other operates a second impulse receiving f relay R2 over wire a.

We suppose now that the registering device is busied by the wire c being connected to the positive pole of the exchange battery and an ii.-- pulse coming in over wire b, impulse receiving relay Rl then attracting its armature. Contacts VIl and i2 are actuated. A first operating relay R3 attracts its armature on contact ii closing, Contacts Iii-35 are operated. A slow release R6 attracts its armature on contact ,.33 closing. Contacts lil- 63 are actuated. AtY the same time selecting magnetSTll/il attracts its armature in the following circuit: -l- (i. e. the positive poleof the exchange battery),contacts 34 and 19, winding f on magnet STMll to negative, (i. e. thenegative pole oi the exchange battery). Selecting magnet STM! attracts its armature.

At the end of the impulse, impulse receiving relay Rl releases its armature and the following circuit is completed: contacts l2 and 32, winding on rst holding relay R5 to negative. Relay R5 attracts its armature and contacts 5l--55 are actuated. The holding circuit for operating relay R3 is broken by -contact 5|, .and relay R3 releases its armature. The selecting magnet STM! is held in the following circuit: -l, contact 55, a winding on each one of the magnets STMl-STMH] to negative. In that circuit none of the selecting magnets SIMI-STMEB is able to attract its armature, the current intensity being arranged so that only an already actuated magnet can hold its armature. At the same time the following circuit is completed: -l-, contacts 52 and is., winding on operating magnet BMD to negative. Magnet BME attracts its armature. contacts lill and i232 and the contacts corresponding to selecting magnet STMI' in the contact rows Kl and K2 are closed. Operating magnet BMil is self -bound with current over contacts 62, lli! and ld.

When operating relay R3 releases its armature first holding relay R5 also releases its armature.

The following circuit is completed: -l, contacts 63, 5ft, HG2, winding onrelay R1 to negative. Relay Rl attracts its armature and the contacts 'i i-l9 are operated. Relay Rl binds itself over contacts 53 and l. Relay RB has a time delay factor and therefore remains operated during the pause between two impulses in an impulse-series.

The operating magnet BMU is held through a circuit over the contacts 53 and l5. The selecting magnetSTiiil is held in a circuit over the contacts 45 and 18.

Hereafter we suppose that another impulse comes in over-wire "c so, that the impulse receiving relay'Ri and operating relay R3 again attract their armatures, the current for selecting magnet STB/Ii then being broken over contact 35. After the end of the impulse, the iirst holding relay R5 attracts its armature. The following circuit is completed: contact 3ft, the contact corresponding to selecting magnet STM l in the contact column Kl, winding on selecting magnet STlii to negative. The selecting magnet STMZ attracts its armature and is being held as described above with'regard to STM! till the beginning of the -neXt impulse. On the first holding relay Rt attracting its armature, contact 53 breaks the current for operating magnet BM, which then releases its armature. On the rst holding relay R again releasing its armature according to the above description, the circuit is completed anew over contact 53 for operating magnet EMB, which again attracts its armature. This time, however, the contacts corresponding to selecting magnet STB/l2 in the contact columns KI and K2 are closed.

II further impulses keep on coming in over wire b without any interruption long enough to allow the slow release relay RS to release its armature, one contact set after the other will, according to the description above, be closed each in its turn in the contact columns KI and K2. Suppose now, that ve impulses consecutively come in over wire b, the contacts corresponding to selecting magnet STME in the contact columns KI and K2 will then be closed, and only selecting magnet STM will hold its armature attracted through the mentioned current from over contacts 35, and 18 and through windings on all the selecting magnets STMI-STMII) to negative. If the impulse-series is thus completed, the slow release relay R6 will release its armature after a short time, following circuit being closed: contacts 6 I, 13, 84, and I I3, winding on operating magnet BMI to negative. The circuit for the second holding relay Rl' is broken by contact 63, but this relay is somewhat slow at release, owing to what the operating magnet BMI has time to attract its armature during the release-time of the second holding relay R'I. Operating magnet BMI is self-bound over contact H4 and wire c to positive, the signal corresponding to the rst impulse series thus being registered. On the second holding relay RI releasing its armature the following circuit is completed: -lwire c, contacts 'II, I2I and III, winding on magnet operating relay R8 to negative. Magnet operating R8 attracts its armature. The contacts 82-84 are actuated.

On the next impulse-series the above process is repeated, if again only impulses of the kind, which comes in over wire b, are included in the impulse-series. After the end of the impulseseries however, the process becomes another, the magnet operating relay R8 having attracted its armature and holding it, even on the second holding relay R'I being actuated, owing to the following circuit: wire c, contacts 'F2 and S2, winding on the magnet operating relay R3 to negative.

On the slow release relay R5 releasing its armature after the end of the impulse-series, the following circuit is completed: -l-, contacts 6I, i3, 83, IIE and I23, winding on operating magnet BMZ to negative. Operating magnet BMZ attracts its armature and the signal corresponding to the second impulse series is registered by closing of contacts, which are not shown on the figure. The operating magnet BMZ binds itself over contact I24. After the second hodling relay R1 has released its armature, the magnet operating relay R8 also releases its armature, since now the holding current over contacts TI, I2I and III is broken in contact I2I.

In a similar way, signal after signal is registered on the operating magnets BMI-BMM The magnet operating R8 attracts its armature after every second impulse-series.

If any of the impulse series is the kind which comes in over wire a, the relay second impulse receiving R2 and the second operating relay Rl! will be actuated instead of the rst impulse receiving relay RI and the rst operating relay R3,

Ail

while the other relays R5-R8 and the operating magnet BMU will work according to the description above. On the rst impulse in such an impulse series the contacts 2I-22 and 4I-45 are thus operated. The following circuit is completed: contacts 35, 44 and TI, winding on selecting magnet STMS to negative. Selecting magnet STD/I3 attracts its armature and is held rst with current over contact 55, then after the end of the first impulse with current over contacts 35, 45 and 18. Alter the end of the impulse, the rst holding relay R5 attracts its armature, this time with current over contacts 22 and 42. The holding circuit for the second operating relay R4 over contacts "I and 5I is broken by contact 5 I. The second operating relay R4 and thereafter the first holding relay R5 release their armatures, aiter which the operating magnet BM attracts according to the description above. If thereafter the next succeeding impulses are of the kind which come in over wire b, the selecting magnets STMQ-STMi are actuated one after the other in accordance with the preceding description. Consequently these impulses over the wire b are the equivalent of one impulse over the wire a and a shorter impulse series is thus obtained. If on the other hand a second impulse also comes in over the wire a, additional impulses of the kind which come in over the wire b can be replaced by means of the contact column K2 with only one impulse of the kind that comes in over the wire a. As shown in Figure 1 the second impulse receiving relay R2 and the second operating relay R4 attract their armatures when the second impulse comes in over the wire a and the following circuit is completed: -l, contacts 35 and 44, the contact correspcnding to selecting magnet STL/I3 in the contact column K2, winding on selecting magnet STMS to negative. Selecting magnet STMQ attracts its armature and holds it until the beginning of the next impulse or until the second holding relay R'I has released its armature. After the end of the impulse the second operating relay R4 and the rst holding relay R5 release their armatures. Operating magnet BMO, which released its armature on the rst holding relay R5 being operated, again attracts its armature. The contacts corresponding to selecting magnet STMS in the contact rows KI and K2 then close. If the impulse series ends herewith, and for instance corresponds to the third iigure or the third signal to be registered, the following circuit is completed on the slow release relay R6 releasing its armature: contacts Si, 13, 84, |22 and I33, winding on operating magnet BM3 to negative. Operating magnet BMS attracts its armature and is held over contact |34. The contacts I3I--I34 and the contacts (not shown in Figure 1) on the operating bar corresponding to the magnet BMS are closed, said last mentioned contacts corresponding to selecting magnet STM9.

It appears from the description above, that signals containing impulses of two kinds can be registered in the cross bar switch shown in the Figure 1. The two contact columns KI and K2 are connected in Figure 1 so that 10 diierent signals corresponding to the Figures 1 9, 0 can be received. In Fig. 2 the existing combinations are shown, two different kinds of signals being marked by RI, R2, respectively, in order to show which one of the impulse receiving relays RI R2, respectively, receives the signal.

It can be understood from the description above, that the invention is not limited to a signal comprised by only two kinds of impulses. If

:assente three kinds of-impulses are desired, there .need

only be added-another-reiay corresponding to the impulse receiving relays'Ri and R2 and an aux iliary relay corresponding to the operating relays R3 and Rfi. Further another contact row on the loperating bar corresponding to the operating magnet BMS and a new connection, easy to arrange by onel skilled in the art, are needed. It is not altogether necessary to use a so-called 'iinpulse operating bar, that is, the operating bar corresponding to the operati magnet BM in the cross-barswitch, but the contacts contained in the contact columns-Eiland K2 can be actuated directly by the "selecting magnets ."llvi- STMlll, special auxiliary relays, however, then being needed for the operation of the selecting magnets. Such relays h ave been known for a long time. The different kinds ci impulses must however close circuits, which include special contacts for each kind of irnpulses on the selecting magnets, as well as they, according to Fig. 1, include contacts in separated contact columns, ell and K2 in the cross bar switch.

I claim:

1. In a telephone system wherein a register includinga cross bar switch is utilized-for recording impulses on the line, said cross bar switch having contacts arranged in rows and pairs of columns, at least one operating bar for controlling the pairs of columns of contacts, va combination magnet and relay for actuating said operating bar, selecting magnets corresponding to the rows of contacts and having operating and holding windings thereon, the holding windings or" the various selecting magnets being interconnected, and one Contact in each rowand one of said columns being connected to the operating winding of the selecting magnet corresponding to the next row, said register having aplurality of relays in serial arrangement including an impulse receiving relay, an operating relay, a iirst holding relay, a slow release relay, and a second holding relay, means responsive to energisation of the impulse receiving relay for energising 'the operating relay, means responsive to energisation of the operating relay and including the first holding relay for establishing a holding lcircuit for the operating relay, means also responsive to energization of the operating relay for establishing an operating circuit for the slow release relay, means also responsive to energiaation of the operating relay for establishing a circuit through the second holding relay for the operating Winding of the selecting magnet correspendingto therlrst rou1 of Vcontacts in the cross'h-ar switchto cause thernagnet to attract its armature, rneans responsive to release of the impulse receiving relay for estab lishing an operating circuit Vtl'irough the Operating relay for energizing the first holding relayto break the holding circuit foi" he 'operating relay, means responsive to energisaticn ci the tir-st holding relay i or establishing a holding circuit for the selecting magnet, means also responsive to energization of the'iirst holding relay'for establishing a circuit through the second holding relay for the magnet for actuating theY operating bar of the cross 'bar switch to close'thepair of contacts in one column corresponding to the 't selecting magnet, means responsive to energication of the relay associated with the magnet for actuating the operating bar lfor establishing a rst holding circuit for said relay through the slow release relay,'ineans responsive to energization of the relay associated with themagnet for actuating the operating bar orestablishing an '75 operating `circuit through the nrst holding Vand slow release relays for the second holding relay, means responsive to energiaation of the second holding relay for establishinga holding circuit through the slow release relay-for the second holding relay, means responsive to release of the iirstholding relay for establishing a second holding circuit through the second holding relay for the magnet for actuating the operating bar, and means responsive to release of the operating relay ior establishing a second holding circuit through the second holding relay for the selecting magnet.

2. In a telephone system wherein a register including va cross bar switch is utilized for recording impulses on the line, said cross bar switch havinfy contacts arranged in rows and pairs of columns, at least one operating bar for controlling the pairs of columns or contacts, a combination magnet and relay for actuating said operating bar, selecting magnets corresponding to the rows of contacts and having operating and holding windings thereon, the holding windings of the various selecting magnets being interconnected, and one contact in each row and one of said columns being connected to the operating winding ofthe selecting magnet corresponding to the next row, said register having a plurality or relays in serial arrangement including an impulse receiving relay, an operating relay, ahrst holding relay, a slow release relay, and a second holding relay, means responsive to energization of the impulse receiving relay for energizing the operating relay, means responsive to energization of the operating relay and including therst holding relay for establishing a'holding-circuit forithe operating relay,'means also responsive to energization of the operating relay for establishing an operating circuit for the slow release relay, 'means also responsive to the rst energization of the operating relay'for establishing a circuit through the second holding relay for the operating winding of the selecting magnet corresponding to the rst row of contacts in the cross bar switch to cause the magnet to attract its armature, means responsive to release or the impulse receiving relay for establishing an operating circuitthrough the operating relay'for energizing the 'first holding relay to break the holding circuit for the operating relay, means responsive to energization ofthe nrst holding relay for establishing a iirst holdingr circuit for the selecting magnets corresponding, respectively, to two successive rows of contacts in the cross bar switch, means responsive to successive energizations of the rst holding relay for establishing a circuit through the second holding relay'for the magnet for actuating the operating bar of the cross bar switch whereby successive operations of said bar close the contacts in said column corresponding, respectively, to the rst and second selecting magnets, means responsive to a second energization of the operating relay for establishing a circuit including the closed contacts in the said column and 'rst row of contacts of the cross bar switch `for the operating winding of 'the selecting magnet corresponding to the second row of contacts in the cross bar switch, means responsive `to energization of the relay associated with the magnet for actuating the operating bar for establishing -a firstv holding circuit for said relay through the slow release relay, means also Vresponsive to energization of the relay associated with the magnet for actuating the operating bar forestablishingan operating circuit through the rst holding and slow release relays for the second holding relay, means responsive to energization of the second holding relay for establishing a holding circuit through the slow release relay for the second holding relay, means responsive to release of the rst holding relay for establishing a second holding circuit through the second holding relay for the magnet for actuating the operating bar, and means responsive to release of the operating relay for establishing a second holding circuit through the second holding relay for the first and second selecting magnets.

3. In a telephone system wherein a register including a cross bar switch is utilized for recording impulses on the line, said cross bar switch having contacts arranged in rows and pairs of columns, at least one operating bar for controlling the pairs of columns of contacts, a

combination magnet and relay for actuating the operating bar, selecting magnets corresponding to the rows of contacts and having operating and holding windings thereon, the holding windings f the various selecting magnets being interconnected, and one contact in each row and one of said columns being connected to the operating winding of the selecting magnet corresponding to the next row, said register having a rst impulse receiving relay responsive to impulses of one frequency, a first operating relay, means responsive to energization or the first impulse receiving relay for energizing the rst operating relay, a second impulse receiving relay responsive to impulses of another frequency, a second operating relay, means responsive to energization of the second impulse receiving relay for energizing the second operating relay, and a plurality of additional relays including a iirst holding relay, a slow release relay, and a second holding relay, means responsive to energization of the second operating relay and including the lrst holding relay for establishing a holding circuit for the second operating relay, means also responsive to energization of the second operating relay for establishing an operating circuit for the slow release relay, means also responsive to energization of the second operating relay for establishing a circuit through the iirst and second operating and second holding relays and the operating winding of the selecting magnet corresponding y to the third row of contacts in the cross bar switch to cause the magnet to attract its armature, means responsive to release of the second impulse receiving relay for establishing an operating circuit through the second operating relay for energizing the first holding relay to break the holding circuit for the second operating relay, means responsive to energization of the rst holding relay for establishing a rst holding circuit for the selecting magnets corresponding, respectively, to three successive rows of contacts in the cross bar switch, means responsive to successive energizations of the iirst holding relay for establishing a circuit through the second holding relay for the magnet for actuating the operating bar of the cross bar switch whereby successive operations of said bar close the contacts in said column corresponding, respectively, to the rst, second, and third selecting magnets, means responsive to energization of the relay associated with the magnet for actuating the operating bar for establishing a first holding circuit for said magnet through the slow release and second holding relays, means also responsive to energization of the relay associated with the magnet for actuating the operating bar for establishing an operating circuit through the iirst holding and slow release relays for the second holding relay, means responsive to energization of the second holding relay for establishing a holding circuit through the slow release relay for the second holding relay, means responsive to release of the rst holding relay for establishing a second holding circuit through the slow release and second holding relays for the magnet for actuating the operating bar, and means responsive to release of the second operating relay for establishing a second holding circuit through the first and second operating and the second holding relays for the said selecting magnets.

4. In a telephone system wherein a register including a cross bar switch is utilized for recording impulses on the line, said cross bar switch having contacts arranged in rows and pairs of columns, at least one operating bar for controlling the pairs of columns of contacts, a combination magnet and relay for actuating the operating bar, selecting magnets having operating and holding windings thereon and arranged seriatim in two groups corresponding to the rows of contacts, the holding windings of the selecting magnets of both groups being interconnected, and one contact in each row and one of said columns being connected to the operating winding of the selecting magnet in the rst group corresponding to the next row and the other contact in each row and the second column being connected, respectively, to operating windings of the selecting magnets in the second group, said register having a first impulse receiving relay responsive to code impulses of one series, a rst operating relay, means responsive to energization of the rst impulse receiving relay for energizing the first operating relay, a second impulse receiving relay responsive to code impulses of another series, a second operating relay, means responsive to energization of the second impulse receiving relay for energizing the second operating relay, and a plurality of additional relays including a iirst holding relay, a slow release relay, and a second holding relay, means responsive to energization of the second operating relay and including the rst holding relay for establishing a holding circuit for the second operating relay, means also responsive to energization of the second operating relay for establishing an operating circuit for the slow release relay, means also responsive to the rst energization of the second operating relay for establishing a circuit through the iirst and second operating and second holding relays and the operating winding of the selecting magnet in the rst group corresponding to the third row of contacts in the cross bar switch to cause the said magnet to attract its armature, means responsive to release or the second impulse receiving relay for establishing an operating circuit through the second operating relay for energizing the first holding relay to break the holding circuit for the second operating relay, means responsive to energization of the iirst holding relay for establishing a iirst holding circuit for the selecting magnets, means responsive to successive energizations of the first holding relay for establishing a circuit through the second holding relay for the magnet for actuating the operating bar' of the cross bar switch whereby successive operations of said bar close the contacts in both columns corresponding, respectively, to the first, second, and third selecting magnets, means responsive to a second energization of the second operating relay for establishing a circuit includ ing the closed contacts in the said second column and third row of contacts in the cross bar switch for the operating winding of a selecting magnet in the lower half of the cross bar switch, means responsive to energization of the relay associated with the magnet for actuating the operating bar for establishing a first holding circuit' for said magnet through the slow release and second holding relays, means also responsive to energization of the relay associated with the said magnet for establishing an operating circuit through the first holding an'd slow release relays for the second holding relay, means responsive to release of the rst holding relay for establishing a second holding circuit through the slow release and second holding relays for the magnet for actuating the operating bar, and means rel0 sponsive to release of the second operating relay for establishing a second holding circuit through the rst and second operating and the second holding relays for the said selecting magnets.

ANTON CHRISTIAN JACOBAEUS.

REFERENCE S CIT ED The following references are of record in the file of this Ipatent:

UNITED STATES PATENTS 

